258474 - Miller 180-Degree Air-Cooled Head Tube 4-Inch for XR-Pro and Spoolmatic Pro

Expand Your Welding Capabilities

Take control of your welding comfort and access with the Miller 258474 Head Tube Assembly. Designed for professional welders using the Miller Spoolmatic Pro or XR-Pro series guns, this 4-inch, 180-degree head tube transforms your gun into a straight-barrel tool. This configuration is perfect for reaching into deep channels, welding overhead with specific angles, or simply customizing your setup for better ergonomics during long shifts.

Tool-Less Adjustability

One of the standout features of this head tube is its rotatable, tool-less design. You can loosen the retaining nut by hand, rotate the tube 360 degrees to whatever angle suits the job, and tighten it back down—all without heading back to the toolbox. This self-seating connection ensures excellent conductivity and gas flow every time, eliminating the frustration of loose connections or gas leaks that can ruin a weld, especially when working with aluminum.

Centerfire™ Performance

This head tube comes ready to accept Miller's Centerfire™ consumables. The Centerfire system is a favorite among fabricators for its drop-in contact tips and threaded nozzles that stay tight and centered. This means you get consistent arc starts and superior gas coverage, which is non-negotiable for high-quality aluminum welding. Whether you are fabricating trailers, repairing boat hulls, or working on general industrial manufacturing, upgrading your gun with the right head tube can significantly improve your efficiency and weld quality.

Seamless Integration

Don't struggle with adapters or aftermarket parts that don't quite fit. This genuine Miller part is designed specifically for your air-cooled XR-Pistol-Pro, XR-Aluma-Pro, or Spoolmatic Pro. It installs in seconds, letting you get back to the arc faster. The 4-inch length provides a standard reach that balances control with accessibility, making it a versatile addition to your welding kit.